Caldwell ruled in March that the legislation was unconstitutional because it bundled together too many items spanning Louisiana's education laws.

But the Louisiana Supreme Court vacated Caldwell's decision in May and asked him to re-evaluate his ruling. The high court said its opinion in a separate case involving Jindal's statewide voucher program contained new case law for Caldwell to review.

Caldwell said even after reviewing that Supreme Court decision, he reached the same conclusion as his prior ruling.

The Louisiana Federation of Teachers filed the lawsuit challenging the 2012 legislation.

Jindal said Wednesday his administration will appeal Caldwell's decision to the Supreme Court.

Diplomats and negotiators kept working Tuesday as a deadline approached to reach a deal on a framework agreement on Iran's nuclear program, but a U.S. State Department official said the discussion may continue after the cutoff.